Wt is a C++ library for developing Web
applications with an API that is widget-centric
and inspired by existing C++ graphical user
interface APIs. To the developer, it offers
abstraction of Web-specific implementation details, increasing the accessibility and portability. Under the hood, the library uses the latest techniques (HTML5, Ajax, WebSockets) to handle user events and update the Web page.

Monkey HTTP Daemon is a very fast and lightweight Web server for Linux. It uses a hybrid networking model based on asynchronous calls (event-driven) and fixed threads, which makes it scalable and capable of attending thousands of clients per second. It provides a powerful API for C and is ideal for embedded devices, thanks to its small core and plugin architecture.

GNU libmicrohttpd is a small C library for
embedding HTTP server functionality into other
applications. It is reentrant, fast, supports HTTP
1.1, and permits listening on multiple ports. The
API is simple and still powerful enough to allow
programmers to use the entire HTTP feature set.
SSL/TLS support is available as an option.

Alaya is a primitive chrooting Web server with basic WebDAV support. It can serve HTTPS and HTTP, and can authenticate using PAM, /etc/shadow, /etc/passwd, or using its own authentication files that allow for 'native' users that only have access to alaya content. It's intended to be a simple method of sharing content over WebDAV, and though it can be configured with a config file, it's easy to configure by command-line switches alone. Alaya always chroots to ensure that malicious users can't use '..' within a URL to access unintended documents, and that users can't accidentally leave documents in places outside of the chroot. It has a 'ChHome' mode that chroots users into their home directory and serves content from there. It supports .cgi scripts out of a trusted path (so not from within the chrooted WebDAV share) and read-only shared directories that are outside of the chroot (allowing access to shared content when in ChHome mode).

Embedthis Appweb is a fast, little embedded Web server. It is unmatched in efficiency and serves pages at native speed, using an event-driven, non-blocking core to serve multiple requests using minimal resources. It has integrated caching and the ESP "C" Web framework. Without compromising performance, it has extensive security controls and a rigorous security sandbox that helps protect the server and mitigate denial-of-service attacks. It is one of the most widely deployed embedded Web servers and is used in networking equipment, telephony, mobile devices, industrial control, and consumer and office equipment, and in high-performance Web services.

Polipo is a lightweight caching Web proxy that was
designed as a personal cache. It is able to cache
incomplete objects and will complete them using
range requests. It will use HTTP/1.1 pipelining if
supported by the remote server.

Stunnix Advanced Web Server is a Web server for
putting Web sites onto CD-ROMs, DVDs, FlashDisks,
and other readonly media to be used on any typical
system. Sites can be scripted with PHP, Python,
Java, or Perl and can be driven by MySQL or SQLite
databases. All required software programs are
designed to reside on the CD-ROM to avoid the need
to install software on the user's computer. The
Web serving core is based on Apache 1.3.x, and has
additional functionality to detect and use free
ports and automatically start a browser on each
platform. Desktop applications can also be created
with it.